Citizen BY1010-57H Tsuki-yomi A-T – Men’s Super Titanium Eco-Drive Grey Dial Radio-Controlled Moonphase World Time Watch

Celebrate innovation and lunar elegance with the Citizen BY1010-57H from the Tsuki-yomi A-T collection. Designed for men, this timepiece features the world’s first light-powered, radio-controlled moon phase movement—Eco-Drive Caliber H874. Crafted from Super Titanium™, it offers superior strength and lightweight comfort. The gray dial with moon phase display and atomic timekeeping ensures precision and style, while the 100-meter water resistance makes it suitable for everyday wear and adventure. Specifications - Model: Citizen BY1010-57H - Gender: Men's - Collection: Tsuki-yomi A-T - Movement: Eco-Drive (Caliber H874) – light-powered, radio-controlled, no battery required - Accuracy: ±15 seconds per month - Display: Analog, 3-hand with moon phase, day-date, and world time - Case Material: Super Titanium™ (silver-tone) - Case Diameter: 43 mm - Dial Color: Gray with moon phase window at 6 o’clock - Crystal: Sapphire glass - Bracelet: Super Titanium - Clasp Type: Fold-over clasp with push button - Water Resistance: 100 meters / 10 BAR – suitable for swimming and snorkeling - Functions: - Moon phase display - Atomic timekeeping (radio-controlled) - Perpetual calendar - World time (24 time zones) - Day-date display